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Leya [2.2K]
2 years ago
15

I

Mathematics
2 answers:
shtirl [24]2 years ago
8 0

a) 10 - 20 +45

Step-by-step explanation:

Is known :

She started with 10 points.

In the first round she lost 20 points.

In the second round she won 45 points.

Asked :

  • Which of the following shows the changes in Anayah scores?

Aswered :

She started with 10 points - In the first round she lost 20 points + In the second round she won 45 points

= 10 - 20 + 45

Elina [12.6K]2 years ago
5 0

Answer:

A.

Step-by-step explanation:

It's set up exactly as it is said. She starts with 10 points automatically so you would put:

10

Then it says that she lost 20 points. Losing is subtraction. You would add this to the equation:

10-20

Then it says she won 45 points. Winning is addition. You would add this to the equation:

10-20+45

This equation matches up with A. thus A. being the correct answer. If they ask for the answer, it is 35 by the way. Hope this helps!

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Answer:

2/5.

Step-by-step explanation:

The prime numbers from 1 to 20 are 2, 3, 5, 7, 11, 13, 17 and 19.

A total of 8.

So the probability of rolling a prime number is 8/20

= 2/5.

3 0
3 years ago
Factor out the greatest common factor 6ab+9bc
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Ab+ac=a(b+c)
a is common factor
factor

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6 0
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Find the solution for this system of equations.
Alexxx [7]
<span>A) 12x + 15y = 34
</span><span>
</span><span>B) -6x + 5y = 3  Multiplying B) by -3
</span>
B) 18x -15y = -9  Then adding this to A) equals
30x = 25
x = <span> <span> <span> 0.8333333333...
</span></span></span>
<span>A) 12x + 15y = 34
</span>
12 * <span> <span> <span> 0.8333333333... + 15y = 34
</span></span></span><span><span><span>
</span></span></span><span><span><span /></span></span>10 + 15y = 34
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y = 1.6

<span><span> </span> </span>





4 0
3 years ago
Which side lengths could NOT form a triangle?
Aleks [24]
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2. 10+10> 2
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10+2> 10

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